What are some things I can do to restore horsepower?
#2
If you're Quattro, it's also a good time to change the rear diff oil (75w90 gear oil.)
Here's a DIY: http://forums.audiworld.com/showthread.php?t=2797649
Have you changed the air filters? Done a basic tune up?
Here's a DIY: http://forums.audiworld.com/showthread.php?t=2797649
Have you changed the air filters? Done a basic tune up?
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